Research on the Performance of Supercritical CO2 Dry Gas Seal with Different Deep Spiral Groove
The performance of supercritical CO2 (SCO2) dry gas seal (DGS) with different deep spiral groove is investigated with the thermal-fluid-solid coupling method. The performance parameters of DGSs with five different kinds of grooves are obtained. The influence of inlet temperature, inlet pressure, velocity and film thickness on performance is analyzed compared with air DGS. The average film pressure, open force and leakage decrease while the average face temperature and flow velocity increase as the spiral groove number increases. The average film pressure, average face temperature, open force and leakage of DGS with radial different deep groove are higher than those of DGS with circumferential different deep groove respectively under the same spiral groove number while the average flow velocity is the opposite. SCO2 DGS can generate larger average film pressure, open force and leakage with lower average face temperature than air DGS. SCO2 DGS could maintain better sealing performance despite larger leakage with the variations of inlet temperature, inlet pressure, velocity and film thickness. The variables hold a more remarkable influence on SCO2 DGS compared with air DGS.
Keywordssupercritical carbon dioxide different deep spiral groove dry gas seal thermal-fluid-solid coupling method
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The authors are grateful for the financial support provided by 111 project (Grant No.B16038).
- Zhou J., Gu B., Characteristcs of fluid film in optimized spiral groove mechanical seal. Chinese Journal of Mechanical Engineering, 2007, 20(6): 54–61.Google Scholar
- Wang H., Chen C., Numerical simulation on the geometric parameters of spiral grooved dry gas seals. International Colloquium on Computing, communication control, and Management Proceedings, 2009, pp.: 5–8.Google Scholar
- Wang H., Zhu W., Wang Q., Numerical simulation on flow field of spiral grooved dry gas seals. International Conference on Computer Design and Applications, 2010: V5-227-V5-230.Google Scholar
- Xu J., Peng X., Bai S., Meng X., CFD simulation of microscale flow field in spiral groove dry gas seal. International Conference on Mechatronics and Embedded Systems and Applications, 2012, pp.: 211–217.Google Scholar
- Parviz M., Nori A.O., Robert L.P., Larry E.J., Experimental and computational investigation of flow and thermal behavior of a mechanical seal. Tribology Transactions, 1999, 42(4): 731–738.Google Scholar
- Brunetiere N., Modolo B., Heat transfer in a mechanical face seal. International Journal of Thermal Sciences, 2009, 48(4): 781–794.Google Scholar
- Zirkelback N., Parametric study of spiral groove gas face seals. Tribology Transactions, 2000, 43(2): 337–343.Google Scholar
- Ruan B., Finite element analysis of the spiral groove gas face seal at the slow speed and the low pressure conditions — slip flow consideration. Tribology Transactions, 2000, 43(3): 411–418.Google Scholar
- Wang H., Zhu B., Lin J., Ye C., A thermohydrodynamic analysis of dry gas seals for high-temperature gas-cooled reactor. Journal of Tribology, 2013, 135(2): 77–82.Google Scholar
- Ma C., Bai S., Peng X., Thermo-hydrodynamic characteristics of spiral groove gas face seals operating at low pressure. Tribology International, 2016, 95: 44–54.Google Scholar
- Su H., Rahmani R., Rahnejat H., Performance evaluation of bidirectional dry gas seals with special groove geometry. Tribology Transactions, 2016, 60(1): 58–69.Google Scholar
- Su H., Rahmani R., Rahnejat H., Thermohydrodynamics of bidirectional groove dry gas seals with slip flow. International Journal of Thermal Sciences, 2016, 110: 270–284.Google Scholar
- Wang Q., Chen H., Liu T., et al., Research on performance of upstream pumping mechanical seal with different deep spiral groove. Institute of Physics Publishing, 2012, 15: 2019.Google Scholar
- Zakariya M.F., Jahn I.H.J., Performance of supercritical CO2 dry gas seals near the critical point. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, 2016: V009T36A007.Google Scholar
- Zakariya M.F., Jahn I.H.J., The influence of real gas effects on the performance of supercritical CO2, dry gas seals. Tribology International, 2016, 102: 333–347.Google Scholar
- Brunetiere N., Tournerie B., Frene J., Influence of fluid flow regime on performances of non-contacting liquid face seals. Journal of Tribology, 2002, 124(3): 515–523.Google Scholar
- Redlich O., Kwong J.N.S., On the thermodynamics of solutions. V. An equation of state. Fugacities of gaseous solutions. Chemical Reviews, 1949, 44(1): 233–244.Google Scholar
- Peng X., Xie Y., Gu Y., Determination of the end faces temperature of mechanical seal. Chemical Engineering & Machnery, 1996, 23(6): 333–336.Google Scholar
- Gabriel R.P., Fundamentals of spiral groove noncontacting face seals. Lubrication Engineering, 1994, 50: 215–224.Google Scholar